Dear Rupamji, Please don't mind my intrusion. I want to share what I've learned from experience just to improve the learning. Both the Diamond pattern you have mentioned are incorrect. Avoid forcing a pattern. There must be touches on pivots (at least 2 thru which line is passing). Also avoid the pivots that is formed by a bad tick in such a situation I use nearby pivot. For any doubts you are always welcomed.
@rupambose32, My favourite book for learning classical chart pattern is Encyclopedia of Chart Patterns by Thomas N. Bulkowski. His website is also having good learning material http://www.thepatternsite.com/.